GPRS家庭防盗报警系统的设计+流程图(8)
#if 0
#define OS_CPU_CM3_NVIC_ST_CTRL (*((volatile INT32U *)0xE000E010)) /* SysTick Ctrl & Status Reg. */
#define OS_CPU_CM3_NVIC_ST_RELOAD (*((volatile INT32U *)0xE000E014)) /* SysTick Reload Value Reg. */
#define OS_CPU_CM3_NVIC_ST_CURRENT (*((volatile INT32U *)0xE000E018)) /* SysTick Current Value Reg. */
#define OS_CPU_CM3_NVIC_ST_CAL (*((volatile INT32U *)0xE000E01C)) /* SysTick Cal Value Reg. */
#define OS_CPU_CM3_NVIC_PRIO_ST (*((volatile INT8U *)0xE000ED23)) /* SysTick Handler Prio Reg. */
#define OS_CPU_CM3_NVIC_ST_CTRL_COUNT 0x00010000 /* Count flag. */
#define OS_CPU_CM3_NVIC_ST_CTRL_CLK_SRC 0x00000004 /* Clock Source. */
#define OS_CPU_CM3_NVIC_ST_CTRL_INTEN 0x00000002 /* Interrupt enable. */
#define OS_CPU_CM3_NVIC_ST_CTRL_ENABLE 0x00000001 /* Counter mode. */
#define OS_CPU_CM3_NVIC_PRIO_MIN 0xFF /* Min handler prio. */
#endif
以及
#if 0
void OS_CPU_SysTickHandler (void)
{
OS_CPU_SR cpu_sr;
OS_ENTER_CRITICAL(); /* Tell uC/OS-II that we are starting an ISR */
OSIntNesting++;
OS_EXIT_CRITICAL();
OSTimeTick(); /* Call uC/OS-II's OSTimeTick() */
OSIntExit(); /* Tell uC/OS-II that we are leaving the ISR */
}
#endif
#if 0
void OS_CPU_SysTickInit (void)
{
INT32U cnts;
cnts = OS_CPU_SysTickClkFreq() / OS_TICKS_PER_SEC;
OS_CPU_CM3_NVIC_ST_RELOAD = (cnts - 1);
/* Set prio of SysTick handler to min prio. */